Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Intangible Assets [Line Items]
Finite and Indefinite-Lived Intangible Assets, Gross, Total	$ 321,514	$ 318,464
Total Accumulated Amortization	(115,819)	(112,222)
Intangible Assets, Net (Excluding Goodwill)	205,695	206,242
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount, Tradename (indefinite life)	35,465	35,474
Intangible Assets, Net (Excluding Goodwill)	35,465	35,474
Customer Relationships [Member]
Intangible Assets [Line Items]
Gross amount	199,969	197,764
Accumulated Amortization	(60,750)	(58,851)
Intangible Assets, Net (Excluding Goodwill)	139,219	138,913
Proven technology and patents [Member]
Intangible Assets [Line Items]
Gross amount	75,791	75,170
Accumulated Amortization	(47,789)	(46,532)
Intangible Assets, Net (Excluding Goodwill)	28,002	28,638
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount	4,586	4,594
Accumulated Amortization	(3,154)	(3,124)
Intangible Assets, Net (Excluding Goodwill)	1,432	1,470
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Gross amount	5,703	5,462
Accumulated Amortization	(4,126)	(3,715)
Intangible Assets, Net (Excluding Goodwill)	$ 1,577	$ 1,747